🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.74 AU - 0.74 AU

Year: 226 Days

Day: 39.7 Hours

Environment

Temp: 154 °C

Axial Tilt: 22.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.64

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.6 AU - 0.92 AU

Year: 235 Days

Day: 26.8 Hours

Environment

Temp: 170 °C

Axial Tilt: 8.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.38 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.25

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.32 AU - 1.44 AU

Year: 575 Days

Day: 21.1 Hours

Environment

Temp: -4 °C

Axial Tilt: 34.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.32 AU - 2.16 AU

Year: 814 Days

Day: 21.5 Hours

Environment

Temp: -46 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 103,020,062 km

• M1: 932,294 km (0.026 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.1 AU - 2.24 AU

Year: 1134 Days

Day: 17 Hours

Environment

Temp: -59 °C

Axial Tilt: 10.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 2.07 AU - 2.65 AU

Year: 1286 Days

Day: 37.6 Hours

Environment

Temp: -78 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Ice Giant

Semi-Major Axis: 17.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 954.9

Radius: 5.8

Gravity: 28.39 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 15.95 AU - 19.69 AU

Year: 26687 Days

Day: 17.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 103,020,062 km

• M1: 72,256 km (0.091 R)
• M2: 298,298 km (0.075 R)
• M3: 723,904 km (0.026 R)
• M4: 933,341 km (0.108 R)
• M5: 1,260,512 km (0.1 R)
• M6: 2,120,999 km (0.082 R)
• M7: 2,823,959 km (0.071 R)
• M8: 5,119,389 km (0.12 R)
• M9: 5,544,546 km (0.12 R)
• M10: 6,465,171 km (0.102 R)
• M11: 7,645,050 km (0.11 R)
• M12: 11,386,343 km (0.085 R)
• M13: 13,568,228 km (0.084 R)
• M14: 14,380,993 km (0.103 R)
• M15: 16,921,314 km (0.101 R)
• M16: 18,640,044 km (0.088 R)
• M17: 18,837,962 km (0.116 R)
• M18: 24,018,686 km (0.115 R)
• M19: 31,173,952 km (0.094 R)
• M20: 34,632,057 km (0.079 R)
• M21: 37,544,578 km (0.113 R)
• M22: 38,018,952 km (0.062 R)
• M23: 41,283,776 km (0.097 R)
• M24: 44,553,986 km (0.103 R)
• M25: 47,071,269 km (0.106 R)
• M26: 48,364,692 km (0.099 R)
• M27: 48,551,391 km (0.039 R)
• M28: 51,022,448 km (0.105 R)
• M29: 66,240,441 km (0.099 R)
• M30: 71,430,889 km (0.063 R)
• M31: 74,373,180 km (0.107 R)
• M32: 76,126,317 km (0.042 R)
• M33: 96,078,784 km (0.068 R)
• M34: 98,157,147 km (0.12 R)

Kuiper Belt

Range: 30.9 - 50.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 420 - 12,499 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit